Start work on alembic

alembic.ini

@@ -35,7 +35,8 @@ script_location = alembic
 # are written from script.py.mako
 # output_encoding = utf-8
 
-sqlalchemy.url = driver://user:pass@localhost/dbname
+# sqlalchemy.url = driver://user:pass@localhost/dbname
+greed_cfg_file = config/config.toml
 
 
 [post_write_hooks]

alembic/env.py

@@ -1,10 +1,11 @@
-import importlib
 from logging.config import fileConfig
 
 from sqlalchemy import engine_from_config
 from sqlalchemy import pool
 
 from alembic import context
+from ..nuconfig import NuConfig
+from ..database import TableDeclarativeBase
 
 
 # this is the Alembic Config object, which provides
@@ -19,7 +20,7 @@ fileConfig(config.config_file_name)
 # for 'autogenerate' support
 # from myapp import mymodel
 # target_metadata = mymodel.Base.metadata
-target_metadata = None
+target_metadata = TableDeclarativeBase.metadata
 
 # other values from the config, defined by the needs of env.py,
 # can be acquired:
@@ -27,6 +28,12 @@ target_metadata = None
 # ... etc.
 
 
+greed_cfg_file = config.get_main_option("greed_config_file")
+with open(greed_cfg_file) as f:
+    greed_cfg = NuConfig(f)
+config["sqlalchemy.url"] = greed_cfg["Database"]["engine"]
+
+
 def run_migrations_offline():
     """Run migrations in 'offline' mode.